graph LR
subgraph "三相逆变桥臂结构"
A["高压直流母线 \n 500-1000VDC"] --> B["直流支撑电容"]
subgraph "A相半桥"
B --> C["VBP165R76SFD \n 上管"]
C --> D["A相输出"]
D --> E["VBP165R76SFD \n 下管"]
E --> F["功率地"]
end
subgraph "B相半桥"
B --> G["VBP165R76SFD \n 上管"]
G --> H["B相输出"]
H --> I["VBP165R76SFD \n 下管"]
I --> F
end
subgraph "C相半桥"
B --> J["VBP165R76SFD \n 上管"]
J --> K["C相输出"]
K --> L["VBP165R76SFD \n 下管"]
L --> F
end
end
subgraph "驱动与保护电路"
M["PWM控制器"] --> N["栅极驱动器"]
N --> C
N --> E
N --> G
N --> I
N --> J
N --> L
O["RCD缓冲电路"] --> C
P["RC吸收电路"] --> E
Q["TVS保护阵列"] --> N
end
subgraph "电流电压检测"
R["霍尔电流传感器"] --> S["A相电流"]
T["霍尔电流传感器"] --> U["B相电流"]
V["霍尔电流传感器"] --> W["C相电流"]
X["电压采样电路"] --> B
S --> MCU1["MCU ADC"]
U --> MCU1
W --> MCU1
X --> MCU1
end
style C fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style E fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
DC/DC双向变换级拓扑详图
graph TB
subgraph "双向升降压变换器"
A["电池输入 \n 48VDC"] --> B["输入滤波电容"]
B --> C["VBMB1606 \n 开关管Q1"]
C --> D["升压电感"]
D --> E["VBMB1606 \n 开关管Q2"]
E --> F["高压直流母线"]
subgraph "同步整流模式"
F --> G["VBMB1606 \n 同步整流管Q3"]
G --> H["续流二极管"]
H --> I["输出滤波"]
I --> A
end
end
subgraph "控制与驱动"
J["双向DC/DC控制器"] --> K["栅极驱动器"]
K --> C
K --> E
K --> G
L["电流检测"] --> M["电池侧电流"]
N["电压检测"] --> O["母线电压"]
M --> J
O --> J
end
subgraph "热管理"
P["风冷散热器"] --> C
P --> E
P --> G
Q["温度传感器"] --> R["散热器温度"]
R --> J
end
style C fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style E fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style G fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
辅助电源与负载管理拓扑详图
graph LR
subgraph "多路辅助电源架构"
A["高压直流母线"] --> B["反激变换器"]
B --> C["12V辅助电源"]
C --> D["LDO稳压器"]
D --> E["5V/3.3V数字电源"]
end
subgraph "智能负载开关矩阵"
subgraph "通道1: 风扇控制"
F["MCU GPIO"] --> G["电平转换"]
G --> H["VBK4223N \n 输入1"]
H --> I["散热风扇"]
I --> J["地"]
end
subgraph "通道2: 接触器驱动"
K["MCU GPIO"] --> L["电平转换"]
L --> M["VBK4223N \n 输入2"]
M --> N["并网接触器"]
N --> J
end
subgraph "通道3: 通信模块"
O["MCU GPIO"] --> P["电平转换"]
P --> Q["VBK4223N \n 输入3"]
Q --> R["通信模块电源"]
R --> J
end
subgraph "通道4: 传感器供电"
S["MCU GPIO"] --> T["电平转换"]
T --> U["VBK4223N \n 输入4"]
U --> V["传感器阵列"]
V --> J
end
end
subgraph "顺序上电控制"
W["上电序列控制器"] --> X["使能信号1"]
W --> Y["使能信号2"]
W --> Z["使能信号3"]
X --> H
Y --> M
Z --> Q
end
style H fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style M fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style Q fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style U fill:#fff3e0,stroke:#ff9800,stroke-width:2px
热管理与保护拓扑详图
graph TB
subgraph "三级散热系统"
A["一级: 液冷系统"] --> B["液冷板"]
B --> C["主逆变MOSFET"]
B --> D["散热器温度1"]
D --> E["温度传感器"]
E --> F["MCU ADC"]
G["二级: 强制风冷"] --> H["铝挤散热器"]
H --> I["DC/DC MOSFET"]
H --> J["散热器温度2"]
J --> K["温度传感器"]
K --> F
L["三级: 自然散热"] --> M["PCB敷铜层"]
M --> N["控制芯片"]
M --> O["芯片结温估算"]
O --> F
end
subgraph "冷却控制逻辑"
F --> P["温度控制算法"]
P --> Q["液冷泵PWM"]
P --> R["风扇PWM"]
Q --> S["液冷泵"]
R --> T["冷却风扇"]
U["环境温度"] --> V["环境传感器"]
V --> F
end
subgraph "电气保护网络"
W["过压保护"] --> X["电压比较器"]
Y["过流保护"] --> Z["电流比较器"]
AA["短路保护"] --> BB["快速比较器"]
X --> CC["故障锁存器"]
Z --> CC
BB --> CC
CC --> DD["全局关断信号"]
DD --> C
DD --> I
EE["TVS阵列"] --> FF["栅极驱动保护"]
FF --> C
FF --> I
GG["RCD缓冲"] --> C
HH["RC吸收"] --> I
end
style C fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style I fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
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